P1400
Differential Pressure Feedback Electronic Sensor Circuit Low Voltage
P1400 is an OBD-II diagnostic trouble code meaning: Differential Pressure Feedback Electronic Sensor Circuit Low Voltage. Common causes: egr differential pressure sensor malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $17–56.
Symptoms
- Check Engine Light Is On
- Reduced engine power
- Unstable idling
- Increased fuel consumption
- Dips during acceleration
Causes
- EGR differential pressure sensor malfunction
- Open or short circuit in the sensor circuit
- Poor contact in the sensor connector
- Wiring Harness Problems
- Engine control unit malfunction
How to Fix
- Check the integrity of wiring and connectors
- Measure resistance and voltage at the sensor
- Check the operation of the EGR valve
- Replace differential pressure sensor if necessary
- Clean or replace the EGR valve if dirty
Related codes
Error P1400 by Vehicle Brand
FAQ
What does the P1400 code mean?
P1400 is an OBD-II diagnostic trouble code that indicates: Differential Pressure Feedback Electronic Sensor Circuit Low Voltage
What causes a P1400 error code?
The most common causes of P1400 include: EGR differential pressure sensor malfunction; Open or short circuit in the sensor circuit; Poor contact in the sensor connector; Wiring Harness Problems.
How do I fix a P1400 diagnostic trouble code?
To fix P1400: Check the integrity of wiring and connectors. Measure resistance and voltage at the sensor. Check the operation of the EGR valve. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1400?
Yes, but get it checked soon
How much does it cost to fix P1400?
The estimated repair cost for P1400 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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